export function downloadFile(res:any) {
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let blob = new Blob([res.data], { type: 'application/octet-stream;charset=UTF-8' })
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let contentDisposition = res.headers['content-disposition']
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let pattern = new RegExp('filename=([^;]+\\.[^\.;]+);*')
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let result = pattern.exec(contentDisposition)
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let filename = result[1];
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let downloadElement = document.createElement('a')
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let href = window.URL.createObjectURL(blob) // 创建下载的链接
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let reg = /^["](.*)["]$/g
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downloadElement.style.display = 'none'
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downloadElement.href = href
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downloadElement.download = decodeURI(filename.replace(reg, '$1')) // 下载后文件名
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document.body.appendChild(downloadElement)
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downloadElement.click() // 点击下载
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document.body.removeChild(downloadElement) // 下载完成移除元素
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window.URL.revokeObjectURL(href)
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}
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